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Spray Pattern Troubleshooting
How to Fix an Uneven Spray Pattern
Video shows what an uneven or irregular shaped pattern looks like and explains how to eliminate the problem while painting with an air assist spray gun.
An uneven or U-shaped pattern can be produced by a dirty or plugged air cap. This can result in uneven coverage and poorly blended finishes.
These patterns also tend to decrease cap cleanliness creating the need for frequent cleaning.
After you have cleaned the air cap and tip, check to insure that the uneven or U-shaped pattern issue has been resolved.
Possible Reasons
Dirty or plugged air cap holes
Tip worn
Tip plugged
Operator spray technique
Best Solution
Clean air cap
Clean tip
Check tip for wear/flow rate
Review operator technique
Why is It Important?
Even / blended finish
Eliminates stripes
Even paint thickness and coverage
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